I had a time finding out about the trail through Nebraska. There was no trouble finding out about the western part of the trail, close to Wyoming. It was the rest of the trail, from the border of Kansas to the west side of Nebraska that had information quite thin on the ground.
The Oregon Trail was 424 miles long through Nebraska. At the time, Nebraska was a territory. The borders were a bit different.
I do have more maps than usual to try to show where the travelers were on the trail.

The first two maps.

Oregon Trail Map  by, National Park Service

NASA topographical map with the Oregon Trail drawn by Matthew Trump.

I will use WC for the pictures from Wikipedia Commons.

When the travelers entered Nebraska, it would have been hard to tell that they were in a different place than Kansas.
They were becoming accustomed to the trail at this point.
Families had a sense of what other families they should avoid and those that they were starting to develop friendships with over time.
The travelers were used to the sounds around them. The cows at the rear of the wagons, the creaking of the wagons and the rolling wagon wheels. There were sounds of voices drifting in the air. The oxen with their harnesses were background noise. Birds singing were sometimes in competition with the complaints of the hens in the coops inside of the wagons.
It could get hot in the last couple of weeks in May. This would tire them out by the time they stopped at noon. The hot afternoons with the bright sun shining down must have been difficult. They would stop at five in the afternoon. This was the end of the day, before all the shores. The day began at four in the morning and they started moving at seven in the morning.
The sun would rise at about six in the morning and set before nine in the evening. It was a long day.

There were rivers to cross. Here is a river map by, Kmusser, WC.

I put a little red arrow to show the Little Blue River. They crossed this and not Big Blue River. They’d be heading for the Platter River after they crossed Little Blue. Above Kansas in yellow, is Nebraska.

This is Little Blue River in Nebraska  by, Ammodramus, WC.

Next is a river map showing the Platte River in Nebraska.

By Shannon, WC

By, Babymetizo, WC

The next picture gives an idea of the flat land that they were traveling on in parts of Nebraska.

By, National Park Service

This is a map of the prairie in the US  by, the Forest Service, US Department of Agriculture. I drew a red circle around Nebraska.

This next picture is of a prairie that shows what they saw for as far as the eye could see in all directions when in those areas.

By Wing Chi Poon, WC

Another prairie picture with a few trees.

This is west of Kearney, Nebraska  by, Decumarcus, English Wikipedia.

It may seem that crossing prairie land was boring. It may have been, except for the sudden storms that would seem to come up out of nowhere.
One thing that was frightening were thunderstorms with Lightning.

By, Lyoha123, WC

The other major weather event that was also frightening were tornadoes.

By, US Department of Agriculture This was taken near Scotts Bluff, Nebraska.

They had to cross the North Platte River. Here are two pictures of it. The second is during a dry spell.

By, Greg Younger from Fort Collins, USA, WC

North Platte River, May 2002  by, US Geological Service

Some pictures of wagon ruts that are still visible in the prairie and other places in Nebraska.

By, National Park Service. The ruts are in the background.

By, National Park Service

Wagon ruts from the California Trail as well as the Oregon Trail. It didn’t say which was which.  By, National Park Service.

This map is called the California Trail. It shows the Oregon Trail and the landmarks that have become well known. It is by, National Park Service.

In Nebraska, Ash Hollow was well known.

By, Chris Light, English Wikipedia

This map by the National Park Service is of the Scotts Bluff Monument. It shows the Oregon Trail, which is the dotted line.

This is a picture of Chimney Rock  by, Mike Tgas from Columbia, MO, US, WC.

The rest of the pictures are of Scotts Bluff.

Covered Wagon at Scotts Bluff  by, Podruznik, WC

Reenactment  by, National Park Service

Saddle Rock  by, National Park Service

Dome Rock  by, National Park Service

The Oregon Trail with Dome Rock up ahead in the distance  by, National Park Service.

The last picture is taken from the top of Scotts Bluff  by, Cathy Cline, WC.